<template>
  <!-- 界面整体背景图 -->
  <div class="container">
    <!-- 界面左边背景图 -->
    <div class="left"></div>
    <!-- 界面右边背景图 -->
    <div class="right">
      <!-- 分为上下两部分，上面是标题，使用背景图片 -->
      <div class="right_top"></div>
      <!-- 登录界面 -->
      <div class="login">
        <el-form
          ref="loginForm"
          :model="loginForm"
          :rules="loginRules"
          class="login-form"
        >
          <h3 class="title">登&nbsp;录</h3>
          <el-form-item prop="username">
            <el-input
              v-model="loginForm.username"
              type="text"
              auto-complete="off"
              placeholder="请输入手机号/邮箱"
            >
              <svg-icon
                slot="prefix"
                icon-class="user"
                class="el-input__icon input-icon"
              />
            </el-input>
          </el-form-item>
          <el-form-item prop="password">
            <el-input
              v-model="loginForm.password"
              type="password"
              auto-complete="off"
              placeholder="请输入密码"
              @keyup.enter.native="handleLogin"
            >
              <svg-icon
                slot="prefix"
                icon-class="password"
                class="el-input__icon input-icon"
              />
            </el-input>
          </el-form-item>
          <el-form-item prop="code" v-if="captchaEnabled">
            <el-input
              v-model="loginForm.code"
              auto-complete="off"
              placeholder="验证码"
              style="width: 63%"
              @keyup.enter.native="handleLogin"
            >
              <svg-icon
                slot="prefix"
                icon-class="validCode"
                class="el-input__icon input-icon"
              />
            </el-input>
            <div class="login-code">
              <img :src="codeUrl" @click="getCode" class="login-code-img" />
            </div>
          </el-form-item>
          <el-checkbox
            v-model="loginForm.rememberMe"
            style="margin: 0px 0px 25px 50px"
            >记住密码</el-checkbox
          >
          <el-form-item style="width: 100%">
            <el-button
              :loading="loading"
              size="medium"
              type="primary"
              style="width: 100%"
              @click.native.prevent="handleLogin"
            >
              <span v-if="!loading">登 录</span>
              <span v-else>登 录 中...</span>
            </el-button>
            <div style="float: right" v-if="register">
              <router-link class="link-type" :to="'/register'"
                >立即注册</router-link
              >
            </div>
          </el-form-item>
        </el-form>
      </div>
    </div>
  </div>
</template>

<script>
import { getCodeImg } from "@/api/login1";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";

export default {
  name: "Login",
  data() {
    return {
      codeUrl: "",
      loginForm: {
        username: "admin",
        password: "admin123",
        rememberMe: false,
        code: "",
        uuid: "",
      },
      loginRules: {
        username: [
          { required: true, trigger: "blur", message: "请输入您的账号" },
        ],
        password: [
          { required: true, trigger: "blur", message: "请输入您的密码" },
        ],
        code: [{ required: true, trigger: "change", message: "请输入验证码" }],
      },
      loading: false,
      // 验证码开关
      captchaEnabled: false,
      // 注册开关
      register: false,
      redirect: undefined,
    };
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true,
    },
  },
  created() {
    this.getCode();
    this.getCookie();
  },
  methods: {
    getCode() {
      getCodeImg().then((res) => {
        this.captchaEnabled =
          res.captchaEnabled === undefined ? true : res.captchaEnabled;
        if (this.captchaEnabled) {
          this.codeUrl = "data:image/gif;base64," + res.img;
          this.loginForm.uuid = res.uuid;
        }
      });
    },
    getCookie() {
      const username = Cookies.get("username");
      const password = Cookies.get("password");
      const rememberMe = Cookies.get("rememberMe");
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password:
          password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
      };
    },
    handleLogin() {
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          this.loading = true;
          if (this.loginForm.rememberMe) {
            Cookies.set("username", this.loginForm.username, { expires: 30 });
            Cookies.set("password", encrypt(this.loginForm.password), {
              expires: 30,
            });
            Cookies.set("rememberMe", this.loginForm.rememberMe, {
              expires: 30,
            });
          } else {
            Cookies.remove("username");
            Cookies.remove("password");
            Cookies.remove("rememberMe");
          }
          this.$store
            .dispatch("Login", this.loginForm)
            .then(() => {
              this.$router.push({ path: this.redirect || "/home/page" }).catch(() => {});
            })
            .catch(() => {
              this.loading = false;
              if (this.captchaEnabled) {
                this.getCode();
              }
            });
        }
      });
    },
  },
};
</script>

<style scoped lang='scss'>
.container {
  background: url(../assets/img/dl_background.png);
  background-size: cover;
  height: 100%;
  width: 100%;
  display: flex;
  .left {
    background: url(../assets/img/dl_logo.png);
    background-size: calc(100vw * (820 / 1920)) calc(100vh * (894 / 1080));
    height: calc(100vh * (894 / 1080));
    width: calc(100vw * (820 / 1920));
    margin-top: 93px;
    margin-left: 189px;
  }
  .right {
    height: calc(100vh * (780 / 1080));
    width: calc(100vw * (516 / 1920));
    margin-top: 140px;
    margin-left: 193px;
    .right_top {
      background: url(../assets/img/dl_title.png);
      background-size: calc(100vw * (497 / 1920)) calc(100vh * (70 / 1080));
      height: calc(100vh * (70 / 1080));
      width: calc(100vw * (497 / 1920));
      font-family: YouSheBiaoTiHei-Regular;
    }
    .login {
      background: url(../assets/img/dl_login.png);
      background-size: calc(100vw * (482 / 1920)) calc(100vh * (630 / 1080));
      height: calc(100vh * (630 / 1080));
      width: calc(100vw * (482 / 1920));
      box-sizing: border-box;
      border: 1px solid rgba(0, 116, 223, 0.2);
      margin-top: 30px;

      .title {
        width: 60px;
        height: 42px;
        font-size: 25px;
        font-family: PingFang SC-Medium, PingFang SC;
        font-weight: 500;
        color: #ffffff;
        line-height: 30px;
        margin-left: 45%;
        margin-top: 15%;
      }
    }
  }
    ::v-deep .el-input--medium .el-input__inner {
      background:transparent;
      border: 1px solid #03486F;
  }
  ::v-deep .el-form-item__content {
    margin-left: 50px !important;
    width: calc(100vw * (360 / 1920));
  }
}
</style>